The Cheyenne-class starship was built with four warp nacelles, connected by two scaled-down
Galaxy-class necks. In case of an emergency, the Cheyenne was designed to
perform a saucer separation procedure.

The Cheyenne at Wolf 359 and in Picard's tachyon grid have two different registeries, NCC-73620 and NCC-71260.
It's unclear if it was meant to be the same ship or not since the NCC-73620 is on the kitbash model and the
NCC-71260 from a display. The model was built from AMT/Ertl Enterprise-D kit, with the bridge taken from the
1/1400 kit to suggest the smaller size of the ship. The warp nacelles were made from highlight markers.

USS Ahwahnee NCC-73620
Fought the Borg at Wolf 359, abandoned but later recovered and served in Captain Picard's
blockade during the Klingon Civil War.The Ahwahnee was originally considered the only survivor at Wolf 359 however the Star Trek:
Encyclopedia states it was the Endeavor that survived instead.
"The Best of Both Worlds" - TNG. "Redemption" - TNG.